Hard Mode
Beat the game on normal difficulty to unlock hard mode.
Boss Challenges
| Unlockable | How to Unlock |
|---|---|
| Easy Boss challenges | Reach the Boss on the Easy difficulty. |
| Easy Mini Boss challenges | Reach the Mini Boss on the Easy or Normal difficulty. |
| Hard Boss challenges | Reach the Boss on the Hard difficulty. |
| Hard Mini Boss challenges | Reach the Mini Boss on the Hard difficulty. |
| Normal Boss challenges | Reach the Boss on the Normal difficulty. |
| Normal Mini Boss challenges | Reach the Mini Boss on the Normal difficulty. |
Achievements
| Unlockable | How to Unlock |
|---|---|
| BLUE BOMBER (10) | Clear the game in under an hour. |
| DESTROYER (20) | Defeat 1000 enemies. |
| HARD ROCK (20) | Make it to a boss room without getting damaged. |
| HEADBANGING (20) | Defeat the 8 bosses without your helmet on. |
| INVINCIBLE (30) | Clear the game without dying. |
| MR.PERFECT (30) | Clear the game without getting damaged. |
| NO COFFEE BREAK (10) | Clear the game without using any energy, mystery, or weapon tanks. |
| SUPERHERO (10) | Clear the game on HARD. |
| TENACIOUS (20) | Clear the game without continuing. |
| TRUSTY SIDEARM (20) | Defeat the 8 bosses with just your default weapon. |
| WHOMP WILY! (5) | Clear the game once. |
| WORLD WARRIOR (5) | Defeat one of every type of enemy. |
